Raw material feeding apparatus for rotary hearth furnace

Abstract

The invention provides a raw materials feeding apparatus capable of uniformly dispersing and feeding into a furnace agglomerated raw materials that are likely to undergo dusting, deformation and mutual adhesion. In a raw material feeding apparatus for a rotary hearth furnace, for feeding raw materials to a rotary hearth furnace by using a flat belt conveyor, the invention employs a construction in which a scraper for guiding the raw materials on the flat belt conveyor to a side surface of the flat belt conveyor is arranged obliquely to a traveling direction of the flat belt conveyor. Preferably, the scraper is arranged in such a manner as to guide the raw materials to both sides of the flat belt conveyor.

1. A raw material-feeding apparatus for a rotary hearth furnace, for feeding raw materials to a rotary hearth furnace by using a flat belt conveyor, characterized in that a scraper for guiding the raw materials on said flat belt conveyor to a side edge of said flat belt conveyor is arranged obliquely to a traveling direction of said flat belt conveyor, wherein the raw materials on said flat bed conveyor are fed to the rotary hearth furnace from the side edge of said flat belt conveyor, and wherein a cutoff plate is arranged downward from the carrier surface of the flat belt conveyor and adjustment projections are disposed on the surface of the scraper on which the raw materials flow. 
   
   
     2. A raw material-feeding apparatus for a rotary hearth furnace according to  claim 1 , wherein said scrapers for guiding the raw materials on said flat belt conveyor to the side edge of said flat belt conveyor are disposed on both sides of said flat belt conveyor and entrance positions of the scrapers where the raw material on the flat belt conveyor are guided to the side edge of the flat belt conveyor for falling on the rotary hearth furnace are arranged alternatively left and right. 
   
   
     3. A raw material-feeding apparatus f or a rotary hearth furnace according to  claim 1 , wherein a gap between entrance portions of said scraper for guiding the raw materials on said flat belt conveyor to the side edge of said flat belt conveyor is adjustable. 
   
   
     4. A raw material-feeding apparatus for a rotary hearth furnace according to  claim 1 , wherein said scraper for guiding the raw materials on said flat belt conveyor to the side edge of said flat belt conveyor is shaped into a curve shape. 
   
   
     5. A raw material-feeding apparatus for a rotary hearth furnace according to  claim 1 , wherein the raw materials are charged in one layer onto said flat belt conveyor. 
   
   
     6. A raw material-feeding apparatus for a rotary hearth furnace according to  claim 1 , wherein the raw materials are charged in two to five layers onto said flat belt conveyor.